build Allegro-Lite - RC Groups
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Oct 17, 2004, 11:31 PM
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Thomas Wang's Avatar

build Allegro-Lite

Start building an Allegro-Lite, here some photos:

Ribs form Laser Art, Boom for Tailboom, Pod & V-mount from Bud, Cabon Cap from CST, still waitting for the K&S Brass tube from Tower Hobby(over 5 weeks have pasted! ) :
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Oct 17, 2004, 11:49 PM
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Thomas Wang's Avatar

Allegro-Lite Wing Tip

Finished wing tip, total weight 22g, the quality of the kevlar wrap need to be improved. It's my firs time to build a cabon-kevlar spar wing, I am amazing about the strength of the spar !

Last edited by Thomas Wang; Oct 22, 2009 at 02:10 AM.
Oct 18, 2004, 12:02 AM
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Thomas Wang's Avatar

Allegro-Lite, Mid Wing

Joiner assembly, I use cabon laminate insted of fiber glass on the bottom of the assembly,

Locate the ribs, joiner, cabon cap, web, and wing tip on the plan, apply epoxy and waitting for cure,

Wrapping the Kevlar tow, I get the kevlar tow from the fiber optic cable, it is very good for building the wing!

Wing spar after wrapping the kevlar tow

Apply epoxy and waitting for cure

Joiner and spar assembly

The quality of the kevlar wrapping is better than the tip

Last edited by Thomas Wang; Oct 22, 2009 at 02:13 AM.
Oct 18, 2004, 02:06 AM
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Ncie Job!!
Oct 18, 2004, 10:30 AM
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John Gallagher's Avatar
great photos.
Can you tell me what the fuse pod cost?
Oct 18, 2004, 08:37 PM
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shaneyee's Avatar
You'll enjoy this one flies beautifully!

Oct 18, 2004, 09:14 PM
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Thomas Wang's Avatar

Allegro-Lite Mid wing (cont.)

Add break rib and inner LE

Inner LE flush with rib bottem

Add gusset

Oct 18, 2004, 09:18 PM
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Thomas Wang's Avatar

Allegro-Lite, stab after sanding


Bottem with V-mount
Oct 18, 2004, 09:26 PM
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It looks like you're doing a fantastic job. Keep up the good work. I look forward to seeing it finished.
Oct 19, 2004, 08:42 PM
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Thomas Wang's Avatar

Allegro-Lite Mid wing (cont.)

Prepare for sheeting, cut the sheet and wet it use watter, bend the sheet according to the curve of the foil, use heat gun dry the sheet, internal side first.

When the sheet dry, it is easy to be glued to the rib & LE structure.

Glue gusset butween bottem sheet and the spar, this will make a strong "D" box.

Mid wing panel after bottem sheeting, sand the inner TE to make it flush with the front of the rib

Top sheet cutted, and will be glued tomorrow
Oct 19, 2004, 08:55 PM
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Originally Posted by Thomas Wang
Top sheet cutted, and will be glued tomorrow
Looks great.

Don't forget the slight -0.5 deg washout in the mid panels when gluing down the top sheeting. The -0.5 deg works out to raising the TE at the outer break by about 1/16". This washout isn't essential, but it's good insurance against any washin creeping in later.
Oct 19, 2004, 09:40 PM
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Thomas Wang's Avatar

Oh! Yeh!

Hi Dr. Drela,

Thanks a lot for your reminder, so happy to get your message and I'll pay attentation to it.

Best regards,

Oct 20, 2004, 02:12 AM
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Lookin good, lookin good!!

Nice build and thanks for sharing your building techniques!
Oct 20, 2004, 10:50 AM
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die fliedermaus's Avatar
I'm currently building an Allegro Lite-E, though my building finesse is much less than yours. Continue posting pics. I am learning.
Oct 20, 2004, 12:40 PM
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ejett's Avatar

Your craftsmanship is superb. I'm very impressed and also encouraged to start assembling the rest of the parts I need to begin my own build. However, I think I'm going to be awhile yet getting underway.

Keep up the good work and keep posting!


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